Merch Page with Payment

[Niyousha99]

Revamp our merch page with our new upcoming merch, photoshoot pics, item descriptions, and order call to action.

Acceptance criteria:

✅ UI mockups: Figma prototype (for desktop, tablet, and mobile) + approval from @JanitaMahum and Comms team
✅ Product listings: display all our merch items with high-quality images, clear titles, and concise descriptions
✅ Order call to action: include link to google form to order
✅ Responsive design: the page must be responsive and display properly on various devices and screen sizes

Nice to have:

• Integrate Stripe for cart and checkout: see Adding a plugin to receive donations and merch payments #394

[Niyousha99]

blocked until merch pics are ready